摘要
利用三维任意坐标系下Euler方程组和LU分解的数值方法模拟了不带膛口装置的某步枪膛口流场,计算结果与实验结果比较吻合.对某口径火炮带有制退器的膛口流场进行了数值模拟,其结果反映了制退器内外流场的主要特征和冲击波波系之间的相互作用,在数值模拟的基础上分析了3排侧孔对制退器性能的影响.本文提供了有关膛口流场的详细数据,将对制退器总体性能研究有重要的参考意义.
Muzzle brakes can control the outflow of powder gas, reduce the backlash, and improve the maneuverability of artilleries. In this paper, muzzle flow field of a musket without a muzzle set is simulated by Euler Equation and LU Decompositions Method. The computation results agree with the experiment results very well. The muzzle flow field of an artillery with a muzzle brake is also simulated. The main characteristics and the mutual relations of shock waves in the muzzle flow field are obtained by the simulation. On the basis of the simulation results, the influences of the brake holes on the muzzle brake capabilities are analyzed. The details of the muzzle flow field in this paper will be useful in the study of the holistic capability of the muzzle brakes.
出处
《力学与实践》
CSCD
北大核心
2008年第4期34-38,共5页
Mechanics in Engineering
关键词
炮口制退器
任意坐标系
LU分解
数值模拟
冲击波
muzzle brake, arbitrary coordinates, LU decompositions, numerical simulation, shock wave
